DNA Motoring RA-HC92-42-AT-2 2-Row Dual/Double Core T-6061 Aluminum Radiator (for Honda D15/16/B18 1.5L/1.6L/1.8L I4 at) Made of high quality full t-6061 aluminum Construction Stronger & higher capacity for coolant than stock units/ light weight direct bolt-on OEM fitment or replacement High performance 2-row racing design/ improves cooling by 35 - 45% Temp. Overall dimension: 14.25 x 16.5 x 1.75/ core dimension: 14 x 13.75 x 1.5/ inlet: 1.25"/ outlet: 1.25" PROFessional installer is highly recommended no instruction included